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Characterization of AuNPs+rGO as a functionalized layer for LSPR sensors

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Resumo:Graphene-based materials have been extensively explored in recent years as valuable candidates as the key material for novel structures in the field, among many other applications, of sensing devices. This work reports a study about the applicability of rGO as a support for gold nanoparticles (AuNPs) prepared with an economic and eco-friendly method using phytochemicals present in tea extract at room temperature. The overall analysis is supported by simulation results about the LSPR effect in AuNPs-rGO, obtained by Mie theory and FDTD method. The residual phytochemicals are analysed as capping agent of the nanoparticles and their influence on the LSPR properties of the nanoparticles is outlined. The resulting composite is suitable for application as a low-cost sensing layer in biomedical LSPR sensor devices.
Autores principais:Fantoni, Alessandro
Outros Autores:Stojkovic, Vladan; Carvalho, Ana; Ribeiro, Ana P. C.; Alegria, Elisabete C.B.A.
Assunto:Carbon materials Nanoparticles Optical materials and properties Thin films General Materials Science Condensed Matter Physics Mechanics of Materials Mechanical Engineering
Ano:2020
País:Portugal
Tipo de documento:artigo
Tipo de acesso:acesso aberto
Instituição associada:Universidade Nova de Lisboa
Idioma:inglês
Origem:Repositório Institucional da UNL

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